This part fixes the issue with rear wheel getting locked up. Which any motorized bicycle rider knows how dangerous it could be while riding your bike at 30mph and rear wheel just ends up locking up on you. This Chain stop upgrade would need to be drilled inside the chain cover. It's about a 10 minute job but well worth it. It allows the chain to stay in place in case it decides to jump up on you. 

Guaranteed no more chain locking issues! it can be installed when the motor is already on your bike. You do not need to remove the motor in order to install the chain stop! This part will never come off as the nuts are vibration resistant and will not loosen over time.

Tools are required for this job and are not included:

Drill

Drill #32 bit

3/32 Allen wrench for the two bolts

1-4 wrench

Vise grips